Rules of the xml document

1.           An XML document must have single root element.

2.           All start tags must matched by end tags.

3.           All attribute values must be quoted.

<?xml version="1.0"?>
<books>
  <book>
    <name>Let Us C</name>
    <author>Yashwant Kanetkar</author>
    <price>245.00</price>   
  </book>
  <book>
    <name>Let Us C++</name>
    <author>Yashwant Kanetkar</author>
    <price>252.00</price>   
  </book>
  <book>
    <name>Java The Complete Reference</name>
    <author>Herbert Schildt</author>
    <price>489.00</price>   
  </book>
  <book>
    <name>HTML5 Black Book</name>
    <author>Kogent Learning Solutions</author>
    <price>485.00</price>   
  </book>  
</books>

In the above xml document <books> is the root element.

Note : XML parser parse the xml document only if the document is well formed with above xml rules..

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